66626044 has 12 divisors (see below), whose sum is σ = 116659368. Its totient is φ = 33294800.

The previous prime is 66626041. The next prime is 66626047. The reversal of 66626044 is 44062666.

It is an interprime number because it is at equal distance from previous prime (66626041) and next prime (66626047).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66626041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6834 + ... + 13414.

It is an arithmetic number, because the mean of its divisors is an integer number (9721614).

Almost surely, 2^66626044 is an apocalyptic number.

It is an amenable number.

66626044 is a deficient number, since it is larger than the sum of its proper divisors (50033324).

66626044 is a wasteful number, since it uses less digits than its factorization.

66626044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9116 (or 9114 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 34.

The square root of 66626044 is about 8162.4778100770. The cubic root of 66626044 is about 405.3977578830.

The spelling of 66626044 in words is "sixty-six million, six hundred twenty-six thousand, forty-four".